Golden rice variety is produced by

Options

A. Introducing three genes for the production of vitamin 'A' in taipei variety Biotechnology and Its Applications
B. Introducing three genes for the production of vitamin 'B' in taipei variety
C. Introducing three genes for the production of vitamin 'C' in taipei variety
D. Introducing threee genes for the production of vitamin 'D' in taipei variety

Answer

### Step-by-Step Solution:

1. **Understanding Golden Rice**: Golden rice is a genetically modified variety of rice that has been engineered to produce beta-carotene, which is a precursor to vitamin A.

2. **Genetic Engineering Process**: The production of golden rice involves genetic engineering techniques. Specifically, scientists introduce genes from other organisms into the rice genome to enable it to synthesize beta-carotene.

3. **Importance of Beta-Carotene**: Beta-carotene is important because it is converted into vitamin A in the human body. Vitamin A is essential for various bodily functions, including vision, immune function, and skin health.

4. **Genes Involved**: The genetic modification of golden rice typically involves the introduction of three specific genes that are responsible for the biosynthesis of beta-carotene. These genes are derived from daffodil and a bacterium.

5. **Conclusion**: Therefore, the golden rice variety is produced by introducing three genes that enable the rice to produce vitamin A through the synthesis of beta-carotene.

### Final Answer:
Golden rice variety is produced by introducing three genes for the production of vitamin A through genetic engineering.

---